Vise



p 1 1931, c. D. GAUDREAU 1,823,537

VISE

Filed June 21, 1930 Patented Sept. 15, 1931 warren S'TA.TES.

VPATENTJOFFICE 5 CHARLES D. GAUDREAU, OF SPR IITGFIELD, MASSACHUSETTS, ASSIGNOR T0. 'BAY STATE TOOL &; MACHINE 00., A CORPORATION OF MASSACHUSETTS V is being vIsn Application filed June 21,

This invention relates to improvements in vises, and, more particularly to a vise,wh1ch is employed by machinists, or tool makers, for clamping a piece of work for drilhng, tapping, milling operations and other usual machine shop operations. v

At the present time, it is customary for a workman to hold, on a drill press table, small pieces of work with his hands, while it drilled or tapped, with the result that he loses his hold on the piece of work, and may be injured or cut by the rotating piece, when-he loses his hold. I

An object of the invention, therefore, is to overcome these. and other objections with my invention. p

A further object is to provide a vise for holding a piece of work and at the same time,providing means for accurately leveling the same. This is accomphshed by accurately machining the clamplng aws and runways for the movable j aw;

A further object is to provide a screw adjustment for the movable jaw inwhich the jaw is given substantially double the movement or travel relative to the travel of the jaw adjusting screw. Thls 1s accomplished by providing two screw threaded members with oppositely inclined threads, one screw threaded member travelling wlthln the other, or outer screw, and the outer or other threaded member travelling na fixed part of the vise. The inner screw is fixedly secured to the travelling jaw of the vise.

These and other objects will appear in the from the right hand, before the screw is inserted.

Flg. 4 1s a transverse sectlonal view on 1930. Serial itcg'aeavev.

the line 4-4 of Fig. 2, illustrating the mounting of the slidable jaw.

Fig. 5 is an end view of Fig, 1 looking from the right, and Figs. 6, 7, 8 and 9 are modifications. I

Referring to the drawings in detail:

1 and 2 indicate the parallelly arranged guide ways; 3 and 4, the end members which are integrally secured tothe guide ways; the member 3 is also'the fixed jaw member. The movable jaw is indicated at 5 and each jaw is formed with a horizontal shoulder,

. or work supporting surface, (Sand 7, and

vertical surfaces, 8 and 9, as shown.

Each of the ways,-1 and 2, is formed with an under guide surface, 10 and 11. Secured to the depending portion 5 of the jaw 5 is a plate 12, by meansof the screws 13. This plate engages the under guide surfaces, 10 and 11, as shown. The movable jaw, 5, is formed'with a 9Q recess 14 for clamping circular work. 15 indicates a screw which is secured to the movable jaw 5 with the pin 16. This screw engages the internalthreads, 17, of the larger or external screw 18, the threads 19 of which engage the threads 20 in the fixed end piece 4. Secured to the the open bottom between the guide ways,

1 and 2, and the jaws,3 and-5, whereby, when a drill or other tool passes through a piece of work, it has a-clear space to oper ate. 'Also, the chips and other material fall freely into this open bottom. The members 1,2, 3a-nd 4 are preferably formed froma single piece "of material and then carefully machined. When in use, a piece of work is" placedon' the carefully finished shoulder surfaces, 6 and 7, and clamped against the-vertical surfaces 8 and 9, by rotating the screw 18 right handedly. This operation, by reason of the two screws 15 and 18, causes the jaw 5 to travel substanv 4. on the supporting table, as a drill press.

7 v screw 18.

' show that the jaw 5 travels agreater distance than the screw 18. The dotted lines 23 and 24: indicate the channels 25 in the guide ways 1 and 2 andthe end pieces 3 and 4. The end pieces 3 and 4 have the depending parts 3 and 4 It will be seen from this description that I have provided a vise for clamping small pieces of work that is accurate, light in weight, one that can be readily freed of chips, quick acting for clamping a piece of work, shown at 23 This vise obviates the necessity of employing blocks and hand clamps for holding a piece of work.

The side legs of the guide pieces 1 and 2 are indicated at 1 and 2 the. lower ends of which are in line with the bottoms of the parts 3 and 4 as shown. 7

An important feature of my present invention-is the carefully and accurately machined shoulder, or work-supporting sur-' faces 6 and 7 of the jaws 3 and 5, on which a piece of work, indicated, at 23 is placed 1 and clamped. These surfaces, together with the vertical'surfaces 8 and 9 serve to accurateiy position and retain, or hold a piece of work, when it is being operated upon as drilling or tapping, or other operations.

; Also, it should be stated that my invention,

tion is to be made on the end of the piece of work 23 Either one of the outer, vertical, surfaces 1 or 2 would then be placed The vertical end surface of the fixed jaw ,3 permits the vise to be placed in a vertical plane. From this description, it will be seen that I have produced a tool, or vise, that. does away with the use'of clamps and angle, irons, as my vise is accuratelyfinished so that when a piece of work is clamped on the shoulder surfaces 6 and 7 it is square or true in all directions, both vertical and horizontal, without further adjustments.

Referring to the modifications shown in Figs. 6, 7, 8 and 9, in .Fig. 6, the shoulder or-work supporting surfaces, instead of being formed as an integral part of the jaws, machined pieces 27- and 27 are secured to the vertical. and inner faces of the jaws 3 and 5, by means of the counter sunk screws 28.j Fig. 7 illustrates a shoulderedpiece 29 placed on the machined surface, or shoulder 30, of the jaw 3, and secured in place with the threaded pin 31, as shown. It is to be understood that an identical shouldered piece is placed on the companion jaw 5, not shown. 3

Fig. 8 illustrates a piece 32 set into a groove 33 of the jaws. This piece may be secured in place with a driving fit, or other suitable way, as by brazing, or if desired it may be formed as to be readily inserted and removed. V Fig. 9 illustrates a piece 34 placed on the upper surfaces of the jaws. It is formed with a tongue 35 which enters a groove 36 in these upper surfaces. A screw 37 may be employed for retaining these pieces in place. A shoulder 38 is thus provided. It will be seen from. the constructions shown in Figs. 6, 7, 8 and 9 that the jaws of a vise may be readily changed to provide shouldered surfaces for receiving and automatically aligning a piece of work, as described.

hat I claim is: v

In combination, in a work holding vise, a pair of side guide members having upper and lower guide surfaces, a fixed and a movable jaw and a fixed end member, the movable jaw being located on the guide members, a plate secured tothe movable aw and located in engagement with the lower guide surface, means for operating the movable jaw comprising two screw threaded members of opposite threads and nested one within the other for imparting a greater travel to the movable jaw than the travel of. the external screw threaded member, t 10 fixed jaw and the fixed end member having grooves or channels and a central bearing portion for supporting the vise.

In testimony hereof, I have subscribed my name this 4th day of June, 1930.

CHARLES D. GAUDREAU. 

